大力宇哥
元素符号 Pu (人造放射性元素) 原子序数94 相对原子质量244.0642 英文名称 Plutonium 来源:在一些铀矿偶尔可发现,用中子轰击铀而得。 用途:用于核反应堆。
阿tin逐梦游
有毒的,有放射性. 是原子能工业的重要原料。只要1g就能让大约1亿人死亡 钚从发现到1942年,一直处于保密状态,主要发现者西博格更是守口如瓶,就是在1988年纪念核裂变现象发现50周年时,西博格仍保留有不愿透露的细节。1942年以前,除了发现者之外,没有几个人知道94号元素的存在。因此,发现者之间一直用“94号元素”称呼这种新元素。为了便于提及,又不会造成泄露机密,有人建议用“银”代替93号元素,西博格小组决定用“铜”代替94号元素。由于他们把94号元素伪称为“铜”,在一些不得不吐真情的场合,又称94号元素为“地道铜”或“真铜”(Honest—to—god—copper)。 钚是由Plutonium音译而来的,而Plutonium是在西博格小组1942年3月21日给华盛顿铀委员会的94号元素研究情况报告中首次出现,但到第二次世界大战结束后,Plutonium一直没有公开。后来,西博格在回忆94号元素命名之事时,他说他清楚地记得,在他们小给内有很多争论。但是大家都追随麦克米伦(E.M.McMillan)从事超铀元素研究,1789年克拉普罗斯(M.Klaproth)把他发现的92号元素铀与1781年发现的天王星(Uranus)联系起来,而麦克米伦把这一命名法延伸至海王星(Neptune)。将他发现的93号元素命名力Neptunium(镎)。因此,按照这种命名习惯,94号元素应该以海王星之外的又一颗行星——冥王星(Pluto)作为命名基础,但是,选用plutium还是plutonium小组成仍有争论。最后,因为发音原因,考虑到后者比前者易于上口才决定选用了plutonium作力94号元素的英文名称。西博格后来回忆此事时谈到[3],他们当时选用plutonium作力94号元素之名是一十明智的选择,并认为在语源上也是正确的选择。记得采纳啊
绿兮衣兮
穿越时空是指从一个空间里通过某种途径转移到另外一个时间段不同的空间。下面我为大家带来穿越时空的英语说法,希望对大家的学习有所帮助!
Chrono Cross
Time travel
穿越时空的爱情 Love through time and space
我能穿越时空 I Travel Through Time
1. She felt herself transcending time and space.
她感到自己正在穿越时空。
2. In my mind's eye my eyes ached to divert.
在我穿越时空的心目中久了,令我此刻的眼睛不忍.
3. Indeed, a journey through Cairo is a journey through time.
的的确确, 穿越开罗的旅行就是一次穿越时空的旅程.
4. Tupper - primitive life can take you through and space, into the tribal life!
百乐 - 原始生活能够带您穿越时空, 走进部落的生活!
5. Then please, and I crossed the tunnel space bar!
那就请和我穿越时空隧道吧!
6. Nemesis emerges from the time warp.
暴影号穿越时空裂缝.
7. I travel through time.
我穿越时空.
8. That day will come, when our songs cross the time and space and go everlasting.
我们的歌声穿越时空持续永远的日子将会到来.
9. I travel through time, I can't control it. It just happens, I wish I didn't.
我能穿越时空, 但是却不能掌控它. 我就是能穿越时候, 可是我多么希望做个平凡人.
10. When I wake, we appear to have passed through a space - time continuum and landed on Mars.
当我醒来的时候, 我们似乎已经穿越时空隧道降落在火星上.
11. They any weight, so their speed is faster than light, which means they can time travel.
因为它们本身没有重量所以它们的速度超过了光速, 也就是说,它们可以穿越时空.
12. Taste and combined with series of grass billion let us pass through time sharing of wisdom.
品味和结合系列的草亿美元让我们穿越时空分享的智慧.
13. We are not this story's author, who fills time and eternity with his purpose.
我们不是这个 故事 的作者, 是杰斐逊作者本人的伟大理想穿越时空并通过我们每天的努力在变为现实.
14. He is a people have come from ancient times, through time and space to the modern.
“他是一个从古代来的人, 穿越时空来到现代”用英语怎么说?
15. I travel through time, I can't control it . It just happens, I wish it didn't.
我能穿越时空, 这是我无法控制的, 它说发生就发生了, 我倒希望我不能.
The idea of time travel is fascinating and interesting. And certainly, the newer ideas about how the university system constructed, raised the possibility that more dimensions than the 3-dimesions of space and one dimesion of time that we used to hear in the university exist.
时光旅行既有趣又吸引人。当然,新观点指出宇宙组成有多维的可能性,人们认为在三维的基础上还有一维时间,自宇宙诞生之时就已开始的时间。
The ideas that are often used in fiction where you travel faster than the speed of light in order to change the past. For example at the end of superman 1, superman whizzes around the planet earth, because he is shocked that the Louis Lane's just died. In the great earthquake caused by nuclear explosion when Lex Lothor detonates something.
科幻小说中最常见的观点就是,当一个人的速度超越光速,他就能穿越时空改变过去。例如在《超人》1的结尾,超人不敢相信Louis Lane因核爆炸引发的地震而死去,他绕着地球飞行。
He breaks the light barrier, travels faster than the speed of light, and then the earth starts go backwards, all of a sudden, Lois Lane rises from the dead.
他打破了光的束缚,超越了光速,接着时空倒转,Louis Lane又活了过来。
The fanciful ideas of travelling backwards through time by moving faster than the speed of light. Simply, mathematically don't work.
超越光速穿越时空的这种奇幻的想法,从数学角度上看并不能实现。
Michael J.Fox put plutonium in his lorry and he rocked back the time while plutonium does not have the enough energy to drive the time machine. To energize a time machine, to bend time into a presser, to punch a hole in the fabricated space and time would require the energy of the star. One version of a time machine uses what's called a wormhole. Think of a looking glass in Alice Wonderland. That looking glass is the wormhole. What happens if you go back in time, and kill your parents before you're born. Well, if you kill your parents before you are born, how could you be born because you just kill your parents before you're born. If you go back within time, and you saved Abram Lincon from being assasinated, you would have essentially saved somebody else's Abram Lincon, your Aram Lincon died. If you change the fabricated time, you are changing another parallel universe. These people are genetically identical to the people of your past. But they're different.
Michael J.Fox将钚元素放入车中,结果扭曲了时间,因为钚并没有足够的能量驾驭时间机器。时间机器需要能量来将时间压缩成环状,在重组的时空中创造一个时空洞,而这需要来自恒星的能量。影视作品中有一个版本的时间机器运用了虫洞的能量。《爱丽丝梦游仙境》中的镜子就是虫洞。另外,如果你回到过去,杀死还没有生孩子的你的父母。也就是说,你杀死了还没有生你时你的父母,那么你又怎么会存在呢,因为你的父母在生你前就已经死了。而如果你穿越时空,解救了被刺杀的林肯,实际上,你解救的林肯将不再是未来世界中的“林肯”,而在你未来时空中的“林肯”还是死了的。如果你改变了过去的时空,你就改变了未来的平行世界。在这个平行世界中的人们和你的过去世界中的人看似一模一样,但实际上他们是不同的。
If I can go back any time in past to see any event, I think I will go back in the past about 3.5 billion years ago, to witness the creation of first molecules of life. I would like to go back to the time that the earth formed, that our sun formed and see how it was, and what exactly was the process that made it possible for our sun to collect together, and force of gravity in all that space dusts and gas coming together to form a star. When people aske: Is time travel just a philosophical structure or hypothetic or mathimatically show. The answer is it's a combination of them all.
如果我能回到过去的任何时间点,我想我会回到35亿年前去见证第一个生命分子的诞生。我想回到地球和太阳成型的时期去看看究竟,去看看到底是什么关键步骤使我们的太阳最终聚集成型,我想去见证宇宙尘埃和气体因引力和重力而聚集成星体。人们可能会问:时间旅行是属于哲学范畴,数学科学,还是一种科学假设。而答案就是这三者的结合。
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